[FFmpeg-user] VOB error
benoit at friry.net
Sun May 29 12:52:55 CEST 2011
> I've saved a VOB file from a DVD. It contains a VHS rip made by a
> "conversion professional".
> I'd like to convert it and make some cutting.
> ffplay refuses to read it:
> $ ffplay VTS_01_1.VOB
> VTS_01_1.VOB: Invalid data found when processing input
> I forced it:
> $ ffplay -f mpegvideo VTS_01_1.VOB
> I get a lot of error on console:
> [mpeg2video @ 0x18d4010]invalid cbp at 21 11
> [mpeg2video @ 0x18d4010]concealing 550 DC, 550 AC, 550 MV errors
> 736.21 A-V: 0.000 s:0.0 aq= 0KB vq= 12KB sq= 0B f=12/638
> Display is split in 2 parts, with some small portions of image.
Carl suggested me to flag with "-f mpeg" instead of "-f mpegvideo".
Display is still splitted in 2 parts, but sound is good and each
image is good. Like when I open it with avidemux.
To be more precise, I have 2 full images side by side, horizontally.
$ ffmpeg -f mpeg -i VTS_01_1.VOB
[mpeg @ 0x22286b0]max_analyze_duration reached
Input #0, mpeg, from 'VTS_01_1.VOB':
Duration: 00:01:33.17, start: 0.222222, bitrate: 35725 kb/s
Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576 [PAR 16:15 DAR 4:3], 2713 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0.1[0x20]: Subtitle: dvdsub
Stream #0.2[0x80]: Audio: ac3, 48000 Hz, stereo, s16, 224 kb/s
At least one output file must be specified
More encouraging. But I don't understand the splitted image.
Could it be linked with interlacing? (video was grabbed from a vhs)
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